[CMake] Fortran_MODULE_DIRECTORY ignored in second subdir

[Petr Kmoch]

I forgot to add that if, immediately after running CMake, I run it again
(without changing a single file), the flags "-module foobar" appear in the
sub2/.../flags.cmake as well.

Petr

On Tue, Feb 12, 2013 at 2:15 PM, Petr Kmoch <petr.kmoch at gmail.com> wrote:

> Hi all.
>
> I have a problem with Fortran_MODULE_DIRECTORY only being applied in the
> first of several subdirectory projects. Here's a simplified setup to
> demonstrate the issue. It has a toplevel C++ project and two subdirectory
> projects which use Fortran:
>
> $cat source_dir/CMakeLists.txt:
> cmake_minimum_required(VERSION 2.8.7)
>
> project(Top) # No Fortran here
>
> add_executable(topper src/main.cpp)
>
> add_subdirectory(sub)
> add_subdirectory(sub2)
> ##
>
> $cat source_dir/sub/CMakeLists.txt:
> cmake_minimum_required(VERSION 2.8.7)
>
> project(Fort Fortran)
>
> add_executable(exe src/exe.f)
> set_target_properties(exe PROPERTIES Fortran_MODULE_DIRECTORY foobar)
> ##
>
> $cat source_dir/sub2/CMakeLists.txt:
> cmake_minimum_required(VERSION 2.8.7)
>
> project(Fort2 Fortran)
>
> add_executable(exe2 src/exe.f)
> set_target_properties(exe2 PROPERTIES Fortran_MODULE_DIRECTORY foobar)
> ##
>
> I run CMake like this:
> $cd build_dir
> $FC=ifort cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE:STRING=Debug
> ../source_dir
>
> Then, I have this output:
> $cat sub/CMakeFiles/exe.dir/flags.make
> # CMAKE generated file: DO NOT EDIT!
> # Generated by "Unix Makefiles" Generator, CMake Version 2.8
>
> # compile Fortran with /some_path_to_ifort/ifort
> Fortran_FLAGS = -g -module foobar
>
> Fortran_DEFINES =
> ##
>
> $cat sub2/CMakeFiles/exe2.dir/flags.make
> # CMAKE generated file: DO NOT EDIT!
> # Generated by "Unix Makefiles" Generator, CMake Version 2.8
>
> # compile Fortran with /some_path_to_ifort/ifort
> Fortran_FLAGS = -g
>
> Fortran_DEFINES =
> ##
>
> The flags "-module foobar" are only present in sub, not in sub2. Am I
> doing something wrong, or is that a bug in CMake?
>
> My real setup doesn't really allow me to enable Fortran in the toplevel
> project; is there a way to make this work without that?
>
> Thanks in advance.
>
> Petr
>
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